Palladium-Catalyzed One-Pot Synthesis of Quinazolinones via tert-Butyl Isocyanide Insertion was written by Jiang, Xiao;Tang, Ting;Wang, Jin-Mei;Chen, Zhong;Zhu, Yong-Ming;Ji, Shun-Jun. And the article was included in Journal of Organic Chemistry in 2014.Quality Control of 2-Amino-4-fluorobenzamide This article mentions the following:
A novel palladium-catalyzed three-component reaction for the synthesis of quinazolin-4(3H)-ones from readily available 2-aminobenzamides and aryl halides via a palladium-catalyzed isocyanide insertion/cyclization sequence has been developed. This methodol. efficiently constructs quinazolin-4(3H)-ones in moderate to excellent yields with the advantages of operational simplicity. E.g., in presence of PdCl2, DPPP, CaCl2, and t-BuONa in toluene at 145 °C, reaction of IPh, anthranilamide, and t-BuNC gave 93% quinazolin-4(3H)-one derivative (I). In the experiment, the researchers used many compounds, for example, 2-Amino-4-fluorobenzamide (cas: 119023-25-5Quality Control of 2-Amino-4-fluorobenzamide).
2-Amino-4-fluorobenzamide (cas: 119023-25-5) belongs to amides. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Quality Control of 2-Amino-4-fluorobenzamide
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics